#include<iostream>
int main(){
	char StuTable[5][10]={
		'A','B','A','C','C','D','E','E','A','D',
		'D','B','A','B','C','A','E','E','A','D',
		'E','D','D','A','C','B','E','E','A','D',
		'C','B','A','E','D','C','E','E','A','D',
		'A','B','D','C','C','D','E','E','A','D'};
	char CorrectAnswer[] = {'D','B','D','C','C','D','A','E','A','D'};

    /**
	* check the answer and show everyone's grade
	*/
	
	//todo

	return 0;
}